障碍物

AT89C51 single-chip microcomputer is used as the test and control core of the intelligent robot in this design,which detects the black line and barrier on the surface of road with infrared photoelectric sensor,and detects iron piece beneath the surface of road with metal sensor,and measures range with photoelectric yard measure,tests and judges the garage position with photoresistor,and also dynamically controls rotating direction and speed of motor by PWM(Pulse-Width Modulation) technique.

本设计以AT89C51单片机作为智能机器人的检测和控制核心，采用红外光电传感器检测路面黑线及障碍物，使用金属传感器检测路面下金属铁片，应用光电码盘测距，用光敏电阻检测、判断车库位置，利用PWM技术动态控制电动机的转动方向和转速。

The result of the experiment shows that this method can accomplish the grid distribution and motion control robustly and efficiently.

通过在复杂障碍物环境中的仿真，显示出该方法可以鲁棒、有效地完成网格分布和移动任务。

Sports An obstacle, such as a sand trap, found on a golf course.

障碍地区：如沙障等高尔夫球球道上的障碍物 v.tr。

To leap over a barrier or other obstacle .A land hazard or bunker on a golf course; a sand trap.

障碍高尔夫球道上的一个障碍物或障碍；高尔夫球道上的沙土障碍

A sand trap serving as an obstacle on a golf course.A land hazard or bunker on a golf course; a sand trap .

障碍高尔夫球道上的一个障碍物或障碍；高尔夫球道上的沙土障碍

To study the effects of the obstacle on flame propagation and flame inner structure in methane/air explosion, the effects of the mesh are studied by high speed photograph and schlieren photographs from the microscopic view, and numerical simulation is build.

通过高速摄影与纹影方法从细观角度研究了网状障碍物对管道内瓦斯爆炸火焰细微结构的影响，以及火焰加速机理，并进行了数值模拟。

During the execution of the Works the Contractor shall keep the Site seasonably free form all unnecessary obstruction and shall store or dispose of any Contractor's Equipment and surplus materials and clear away and remove from the Site any wreckage, rubbish or Temporary Works no longer required.

在工程施工期间，承包商应合理地保持现场不出现不必要的障碍物，存放并处置好承包商的任何设备和多余的材料并从现场清除运走任何废料、垃圾或不再需要的临时工程。

The precision of our algorithm is high. Additionally the shortest path problem among polyhedrons in 3D space is studied.

本文进一步研究了三维空间体障碍物群中两点间的最短路径问题。

Additionally the shortest path problem among polyhedrons in 3D space is studied.

本文进一步研究了三维空间体障碍物群中两点间的最短路径问题。

In the opening scene of Spirited Away a family driving in search of its new home pulls up in front of a big blank wall, sinisterly plain and obstructive, with nothing but a narrow mouldy tunnel as the way through.

在《千与千寻》开始的场景里，一家人驱车寻找新家被一座无法克服的大墙，怪诞的草原和其他障碍物所拦，只有一条发了霉的隧道可以穿过。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。